1. Pressure Principle

Liquid is supplied in pressurised from with the help of pump or pressurised
container, separate compressed air is needed.

2. SIPHON Principle

Siphone principle is utilised to lift liquid from certain height from spray nozzle, suitable where pump or pressurised container of liquid is not available.

3. Gravity Head Principle

Gravitational head of liquid is utilised to feed liquid to the spray nozzle, suitable where pump of pressurised container of liquid is not available.

Choice of Spray Nozzles

Each spray set-ups consists of an air cap which provide a specific spray pattern capacity and coverage performance.

Inside Body Mixing

Liquid and air streams meet within nozzle and are mixed together and expelled through the same orifice. This internal mixing means the streams are not independent; a change in air flow will affect the liquid more difficult than with an External Mix Set-up. Internal Mix set-up are able to produce the finest atomization of any of the XA set-ups, but they are generally not suitable for use with liquids which have a viscosity that is above 200 centipoise.

Out side Body Mixing

The air and liquid streams exit the nozzle independently and are combined and mixed outside of the nozzle. Because there is no connection between the air and liquid lines within the nozzles, the air and liquid flow rates can be controlled independently, allowing precise metering of the liquid. The atomization can be controlled by adjusting the air flow rate more air produces finear atomizaton. In most cases these setup do not atomize as finely as Internal Mix Set-Ups.

External Mix Set-up may be used with liquid having a viscosity above 200 centipoise and for abrasive suspensions. Spraytech provides Engineering guidance for spraying high viscosity liquids.